<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.collect;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkElementIndex;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import static com.google.common.base.Preconditions.checkPositionIndex;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import static com.google.common.base.Preconditions.checkPositionIndexes;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import static com.google.common.collect.ObjectArrays.checkElementNotNull;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import com.google.common.annotations.GwtCompatible;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.io.InvalidObjectException;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.io.ObjectInputStream;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.io.Serializable;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.Collection;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.Collections;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.Iterator;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.List;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import java.util.RandomAccess;<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>import javax.annotation.Nullable;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>/**<a name="line.38"></a>
<span class="sourceLineNo">039</span> * A high-performance, immutable, random-access {@code List} implementation.<a name="line.39"></a>
<span class="sourceLineNo">040</span> * Does not permit null elements.<a name="line.40"></a>
<span class="sourceLineNo">041</span> *<a name="line.41"></a>
<span class="sourceLineNo">042</span> * &lt;p&gt;Unlike {@link Collections#unmodifiableList}, which is a &lt;i&gt;view&lt;/i&gt; of a<a name="line.42"></a>
<span class="sourceLineNo">043</span> * separate collection that can still change, an instance of {@code<a name="line.43"></a>
<span class="sourceLineNo">044</span> * ImmutableList} contains its own private data and will &lt;i&gt;never&lt;/i&gt; change.<a name="line.44"></a>
<span class="sourceLineNo">045</span> * {@code ImmutableList} is convenient for {@code public static final} lists<a name="line.45"></a>
<span class="sourceLineNo">046</span> * ("constant lists") and also lets you easily make a "defensive copy" of a list<a name="line.46"></a>
<span class="sourceLineNo">047</span> * provided to your class by a caller.<a name="line.47"></a>
<span class="sourceLineNo">048</span> *<a name="line.48"></a>
<span class="sourceLineNo">049</span> * &lt;p&gt;&lt;b&gt;Note:&lt;/b&gt; Although this class is not final, it cannot be subclassed as<a name="line.49"></a>
<span class="sourceLineNo">050</span> * it has no public or protected constructors. Thus, instances of this type are<a name="line.50"></a>
<span class="sourceLineNo">051</span> * guaranteed to be immutable.<a name="line.51"></a>
<span class="sourceLineNo">052</span> *<a name="line.52"></a>
<span class="sourceLineNo">053</span> * &lt;p&gt;See the Guava User Guide article on &lt;a href=<a name="line.53"></a>
<span class="sourceLineNo">054</span> * "http://code.google.com/p/guava-libraries/wiki/ImmutableCollectionsExplained"&gt;<a name="line.54"></a>
<span class="sourceLineNo">055</span> * immutable collections&lt;/a&gt;.<a name="line.55"></a>
<span class="sourceLineNo">056</span> *<a name="line.56"></a>
<span class="sourceLineNo">057</span> * @see ImmutableMap<a name="line.57"></a>
<span class="sourceLineNo">058</span> * @see ImmutableSet<a name="line.58"></a>
<span class="sourceLineNo">059</span> * @author Kevin Bourrillion<a name="line.59"></a>
<span class="sourceLineNo">060</span> * @since 2.0 (imported from Google Collections Library)<a name="line.60"></a>
<span class="sourceLineNo">061</span> */<a name="line.61"></a>
<span class="sourceLineNo">062</span>@GwtCompatible(serializable = true, emulated = true)<a name="line.62"></a>
<span class="sourceLineNo">063</span>@SuppressWarnings("serial") // we're overriding default serialization<a name="line.63"></a>
<span class="sourceLineNo">064</span>public abstract class ImmutableList&lt;E&gt; extends ImmutableCollection&lt;E&gt;<a name="line.64"></a>
<span class="sourceLineNo">065</span>    implements List&lt;E&gt;, RandomAccess {<a name="line.65"></a>
<span class="sourceLineNo">066</span>  /**<a name="line.66"></a>
<span class="sourceLineNo">067</span>   * Returns the empty immutable list. This set behaves and performs comparably<a name="line.67"></a>
<span class="sourceLineNo">068</span>   * to {@link Collections#emptyList}, and is preferable mainly for consistency<a name="line.68"></a>
<span class="sourceLineNo">069</span>   * and maintainability of your code.<a name="line.69"></a>
<span class="sourceLineNo">070</span>   */<a name="line.70"></a>
<span class="sourceLineNo">071</span>  // Casting to any type is safe because the list will never hold any elements.<a name="line.71"></a>
<span class="sourceLineNo">072</span>  @SuppressWarnings("unchecked")<a name="line.72"></a>
<span class="sourceLineNo">073</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of() {<a name="line.73"></a>
<span class="sourceLineNo">074</span>    return (ImmutableList&lt;E&gt;) EmptyImmutableList.INSTANCE;<a name="line.74"></a>
<span class="sourceLineNo">075</span>  }<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>  /**<a name="line.77"></a>
<span class="sourceLineNo">078</span>   * Returns an immutable list containing a single element. This list behaves<a name="line.78"></a>
<span class="sourceLineNo">079</span>   * and performs comparably to {@link Collections#singleton}, but will not<a name="line.79"></a>
<span class="sourceLineNo">080</span>   * accept a null element. It is preferable mainly for consistency and<a name="line.80"></a>
<span class="sourceLineNo">081</span>   * maintainability of your code.<a name="line.81"></a>
<span class="sourceLineNo">082</span>   *<a name="line.82"></a>
<span class="sourceLineNo">083</span>   * @throws NullPointerException if {@code element} is null<a name="line.83"></a>
<span class="sourceLineNo">084</span>   */<a name="line.84"></a>
<span class="sourceLineNo">085</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E element) {<a name="line.85"></a>
<span class="sourceLineNo">086</span>    return new SingletonImmutableList&lt;E&gt;(element);<a name="line.86"></a>
<span class="sourceLineNo">087</span>  }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span>  /**<a name="line.89"></a>
<span class="sourceLineNo">090</span>   * Returns an immutable list containing the given elements, in order.<a name="line.90"></a>
<span class="sourceLineNo">091</span>   *<a name="line.91"></a>
<span class="sourceLineNo">092</span>   * @throws NullPointerException if any element is null<a name="line.92"></a>
<span class="sourceLineNo">093</span>   */<a name="line.93"></a>
<span class="sourceLineNo">094</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E e1, E e2) {<a name="line.94"></a>
<span class="sourceLineNo">095</span>    return construct(e1, e2);<a name="line.95"></a>
<span class="sourceLineNo">096</span>  }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>  /**<a name="line.98"></a>
<span class="sourceLineNo">099</span>   * Returns an immutable list containing the given elements, in order.<a name="line.99"></a>
<span class="sourceLineNo">100</span>   *<a name="line.100"></a>
<span class="sourceLineNo">101</span>   * @throws NullPointerException if any element is null<a name="line.101"></a>
<span class="sourceLineNo">102</span>   */<a name="line.102"></a>
<span class="sourceLineNo">103</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E e1, E e2, E e3) {<a name="line.103"></a>
<span class="sourceLineNo">104</span>    return construct(e1, e2, e3);<a name="line.104"></a>
<span class="sourceLineNo">105</span>  }<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span>  /**<a name="line.107"></a>
<span class="sourceLineNo">108</span>   * Returns an immutable list containing the given elements, in order.<a name="line.108"></a>
<span class="sourceLineNo">109</span>   *<a name="line.109"></a>
<span class="sourceLineNo">110</span>   * @throws NullPointerException if any element is null<a name="line.110"></a>
<span class="sourceLineNo">111</span>   */<a name="line.111"></a>
<span class="sourceLineNo">112</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E e1, E e2, E e3, E e4) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>    return construct(e1, e2, e3, e4);<a name="line.113"></a>
<span class="sourceLineNo">114</span>  }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span>  /**<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * Returns an immutable list containing the given elements, in order.<a name="line.117"></a>
<span class="sourceLineNo">118</span>   *<a name="line.118"></a>
<span class="sourceLineNo">119</span>   * @throws NullPointerException if any element is null<a name="line.119"></a>
<span class="sourceLineNo">120</span>   */<a name="line.120"></a>
<span class="sourceLineNo">121</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E e1, E e2, E e3, E e4, E e5) {<a name="line.121"></a>
<span class="sourceLineNo">122</span>    return construct(e1, e2, e3, e4, e5);<a name="line.122"></a>
<span class="sourceLineNo">123</span>  }<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span>  /**<a name="line.125"></a>
<span class="sourceLineNo">126</span>   * Returns an immutable list containing the given elements, in order.<a name="line.126"></a>
<span class="sourceLineNo">127</span>   *<a name="line.127"></a>
<span class="sourceLineNo">128</span>   * @throws NullPointerException if any element is null<a name="line.128"></a>
<span class="sourceLineNo">129</span>   */<a name="line.129"></a>
<span class="sourceLineNo">130</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(E e1, E e2, E e3, E e4, E e5, E e6) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>    return construct(e1, e2, e3, e4, e5, e6);<a name="line.131"></a>
<span class="sourceLineNo">132</span>  }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>  /**<a name="line.134"></a>
<span class="sourceLineNo">135</span>   * Returns an immutable list containing the given elements, in order.<a name="line.135"></a>
<span class="sourceLineNo">136</span>   *<a name="line.136"></a>
<span class="sourceLineNo">137</span>   * @throws NullPointerException if any element is null<a name="line.137"></a>
<span class="sourceLineNo">138</span>   */<a name="line.138"></a>
<span class="sourceLineNo">139</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.139"></a>
<span class="sourceLineNo">140</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7) {<a name="line.140"></a>
<span class="sourceLineNo">141</span>    return construct(e1, e2, e3, e4, e5, e6, e7);<a name="line.141"></a>
<span class="sourceLineNo">142</span>  }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>  /**<a name="line.144"></a>
<span class="sourceLineNo">145</span>   * Returns an immutable list containing the given elements, in order.<a name="line.145"></a>
<span class="sourceLineNo">146</span>   *<a name="line.146"></a>
<span class="sourceLineNo">147</span>   * @throws NullPointerException if any element is null<a name="line.147"></a>
<span class="sourceLineNo">148</span>   */<a name="line.148"></a>
<span class="sourceLineNo">149</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.149"></a>
<span class="sourceLineNo">150</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8) {<a name="line.150"></a>
<span class="sourceLineNo">151</span>    return construct(e1, e2, e3, e4, e5, e6, e7, e8);<a name="line.151"></a>
<span class="sourceLineNo">152</span>  }<a name="line.152"></a>
<span class="sourceLineNo">153</span><a name="line.153"></a>
<span class="sourceLineNo">154</span>  /**<a name="line.154"></a>
<span class="sourceLineNo">155</span>   * Returns an immutable list containing the given elements, in order.<a name="line.155"></a>
<span class="sourceLineNo">156</span>   *<a name="line.156"></a>
<span class="sourceLineNo">157</span>   * @throws NullPointerException if any element is null<a name="line.157"></a>
<span class="sourceLineNo">158</span>   */<a name="line.158"></a>
<span class="sourceLineNo">159</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.159"></a>
<span class="sourceLineNo">160</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9) {<a name="line.160"></a>
<span class="sourceLineNo">161</span>    return construct(e1, e2, e3, e4, e5, e6, e7, e8, e9);<a name="line.161"></a>
<span class="sourceLineNo">162</span>  }<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span>  /**<a name="line.164"></a>
<span class="sourceLineNo">165</span>   * Returns an immutable list containing the given elements, in order.<a name="line.165"></a>
<span class="sourceLineNo">166</span>   *<a name="line.166"></a>
<span class="sourceLineNo">167</span>   * @throws NullPointerException if any element is null<a name="line.167"></a>
<span class="sourceLineNo">168</span>   */<a name="line.168"></a>
<span class="sourceLineNo">169</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.169"></a>
<span class="sourceLineNo">170</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10) {<a name="line.170"></a>
<span class="sourceLineNo">171</span>    return construct(e1, e2, e3, e4, e5, e6, e7, e8, e9, e10);<a name="line.171"></a>
<span class="sourceLineNo">172</span>  }<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span>  /**<a name="line.174"></a>
<span class="sourceLineNo">175</span>   * Returns an immutable list containing the given elements, in order.<a name="line.175"></a>
<span class="sourceLineNo">176</span>   *<a name="line.176"></a>
<span class="sourceLineNo">177</span>   * @throws NullPointerException if any element is null<a name="line.177"></a>
<span class="sourceLineNo">178</span>   */<a name="line.178"></a>
<span class="sourceLineNo">179</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.179"></a>
<span class="sourceLineNo">180</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11) {<a name="line.180"></a>
<span class="sourceLineNo">181</span>    return construct(e1, e2, e3, e4, e5, e6, e7, e8, e9, e10, e11);<a name="line.181"></a>
<span class="sourceLineNo">182</span>  }<a name="line.182"></a>
<span class="sourceLineNo">183</span><a name="line.183"></a>
<span class="sourceLineNo">184</span>  // These go up to eleven. After that, you just get the varargs form, and<a name="line.184"></a>
<span class="sourceLineNo">185</span>  // whatever warnings might come along with it. :(<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span>  /**<a name="line.187"></a>
<span class="sourceLineNo">188</span>   * Returns an immutable list containing the given elements, in order.<a name="line.188"></a>
<span class="sourceLineNo">189</span>   *<a name="line.189"></a>
<span class="sourceLineNo">190</span>   * @throws NullPointerException if any element is null<a name="line.190"></a>
<span class="sourceLineNo">191</span>   * @since 3.0 (source-compatible since 2.0)<a name="line.191"></a>
<span class="sourceLineNo">192</span>   */<a name="line.192"></a>
<span class="sourceLineNo">193</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; of(<a name="line.193"></a>
<span class="sourceLineNo">194</span>      E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10, E e11, E e12,<a name="line.194"></a>
<span class="sourceLineNo">195</span>      E... others) {<a name="line.195"></a>
<span class="sourceLineNo">196</span>    Object[] array = new Object[12 + others.length];<a name="line.196"></a>
<span class="sourceLineNo">197</span>    array[0] = e1;<a name="line.197"></a>
<span class="sourceLineNo">198</span>    array[1] = e2;<a name="line.198"></a>
<span class="sourceLineNo">199</span>    array[2] = e3;<a name="line.199"></a>
<span class="sourceLineNo">200</span>    array[3] = e4;<a name="line.200"></a>
<span class="sourceLineNo">201</span>    array[4] = e5;<a name="line.201"></a>
<span class="sourceLineNo">202</span>    array[5] = e6;<a name="line.202"></a>
<span class="sourceLineNo">203</span>    array[6] = e7;<a name="line.203"></a>
<span class="sourceLineNo">204</span>    array[7] = e8;<a name="line.204"></a>
<span class="sourceLineNo">205</span>    array[8] = e9;<a name="line.205"></a>
<span class="sourceLineNo">206</span>    array[9] = e10;<a name="line.206"></a>
<span class="sourceLineNo">207</span>    array[10] = e11;<a name="line.207"></a>
<span class="sourceLineNo">208</span>    array[11] = e12;<a name="line.208"></a>
<span class="sourceLineNo">209</span>    System.arraycopy(others, 0, array, 12, others.length);<a name="line.209"></a>
<span class="sourceLineNo">210</span>    return construct(array);<a name="line.210"></a>
<span class="sourceLineNo">211</span>  }<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span>  /**<a name="line.213"></a>
<span class="sourceLineNo">214</span>   * Returns an immutable list containing the given elements, in order. If<a name="line.214"></a>
<span class="sourceLineNo">215</span>   * {@code elements} is a {@link Collection}, this method behaves exactly as<a name="line.215"></a>
<span class="sourceLineNo">216</span>   * {@link #copyOf(Collection)}; otherwise, it behaves exactly as {@code<a name="line.216"></a>
<span class="sourceLineNo">217</span>   * copyOf(elements.iterator()}.<a name="line.217"></a>
<span class="sourceLineNo">218</span>   *<a name="line.218"></a>
<span class="sourceLineNo">219</span>   * @throws NullPointerException if any of {@code elements} is null<a name="line.219"></a>
<span class="sourceLineNo">220</span>   */<a name="line.220"></a>
<span class="sourceLineNo">221</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; copyOf(Iterable&lt;? extends E&gt; elements) {<a name="line.221"></a>
<span class="sourceLineNo">222</span>    checkNotNull(elements); // TODO(kevinb): is this here only for GWT?<a name="line.222"></a>
<span class="sourceLineNo">223</span>    return (elements instanceof Collection)<a name="line.223"></a>
<span class="sourceLineNo">224</span>      ? copyOf(Collections2.cast(elements))<a name="line.224"></a>
<span class="sourceLineNo">225</span>      : copyOf(elements.iterator());<a name="line.225"></a>
<span class="sourceLineNo">226</span>  }<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
<span class="sourceLineNo">228</span>  /**<a name="line.228"></a>
<span class="sourceLineNo">229</span>   * Returns an immutable list containing the given elements, in order.<a name="line.229"></a>
<span class="sourceLineNo">230</span>   *<a name="line.230"></a>
<span class="sourceLineNo">231</span>   * &lt;p&gt;Despite the method name, this method attempts to avoid actually copying<a name="line.231"></a>
<span class="sourceLineNo">232</span>   * the data when it is safe to do so. The exact circumstances under which a<a name="line.232"></a>
<span class="sourceLineNo">233</span>   * copy will or will not be performed are undocumented and subject to change.<a name="line.233"></a>
<span class="sourceLineNo">234</span>   *<a name="line.234"></a>
<span class="sourceLineNo">235</span>   * &lt;p&gt;Note that if {@code list} is a {@code List&lt;String&gt;}, then {@code<a name="line.235"></a>
<span class="sourceLineNo">236</span>   * ImmutableList.copyOf(list)} returns an {@code ImmutableList&lt;String&gt;}<a name="line.236"></a>
<span class="sourceLineNo">237</span>   * containing each of the strings in {@code list}, while<a name="line.237"></a>
<span class="sourceLineNo">238</span>   * ImmutableList.of(list)} returns an {@code ImmutableList&lt;List&lt;String&gt;&gt;}<a name="line.238"></a>
<span class="sourceLineNo">239</span>   * containing one element (the given list itself).<a name="line.239"></a>
<span class="sourceLineNo">240</span>   *<a name="line.240"></a>
<span class="sourceLineNo">241</span>   * &lt;p&gt;This method is safe to use even when {@code elements} is a synchronized<a name="line.241"></a>
<span class="sourceLineNo">242</span>   * or concurrent collection that is currently being modified by another<a name="line.242"></a>
<span class="sourceLineNo">243</span>   * thread.<a name="line.243"></a>
<span class="sourceLineNo">244</span>   *<a name="line.244"></a>
<span class="sourceLineNo">245</span>   * @throws NullPointerException if any of {@code elements} is null<a name="line.245"></a>
<span class="sourceLineNo">246</span>   */<a name="line.246"></a>
<span class="sourceLineNo">247</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; copyOf(Collection&lt;? extends E&gt; elements) {<a name="line.247"></a>
<span class="sourceLineNo">248</span>    if (elements instanceof ImmutableCollection) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>      @SuppressWarnings("unchecked") // all supported methods are covariant<a name="line.249"></a>
<span class="sourceLineNo">250</span>      ImmutableList&lt;E&gt; list = ((ImmutableCollection&lt;E&gt;) elements).asList();<a name="line.250"></a>
<span class="sourceLineNo">251</span>      return list.isPartialView() ? copyFromCollection(list) : list;<a name="line.251"></a>
<span class="sourceLineNo">252</span>    }<a name="line.252"></a>
<span class="sourceLineNo">253</span>    return copyFromCollection(elements);<a name="line.253"></a>
<span class="sourceLineNo">254</span>  }<a name="line.254"></a>
<span class="sourceLineNo">255</span><a name="line.255"></a>
<span class="sourceLineNo">256</span>  /**<a name="line.256"></a>
<span class="sourceLineNo">257</span>   * Returns an immutable list containing the given elements, in order.<a name="line.257"></a>
<span class="sourceLineNo">258</span>   *<a name="line.258"></a>
<span class="sourceLineNo">259</span>   * @throws NullPointerException if any of {@code elements} is null<a name="line.259"></a>
<span class="sourceLineNo">260</span>   */<a name="line.260"></a>
<span class="sourceLineNo">261</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; copyOf(Iterator&lt;? extends E&gt; elements) {<a name="line.261"></a>
<span class="sourceLineNo">262</span>    // We special-case for 0 or 1 elements, but going further is madness.<a name="line.262"></a>
<span class="sourceLineNo">263</span>    if (!elements.hasNext()) {<a name="line.263"></a>
<span class="sourceLineNo">264</span>      return of();<a name="line.264"></a>
<span class="sourceLineNo">265</span>    }<a name="line.265"></a>
<span class="sourceLineNo">266</span>    E first = elements.next();<a name="line.266"></a>
<span class="sourceLineNo">267</span>    if (!elements.hasNext()) {<a name="line.267"></a>
<span class="sourceLineNo">268</span>      return of(first);<a name="line.268"></a>
<span class="sourceLineNo">269</span>    } else {<a name="line.269"></a>
<span class="sourceLineNo">270</span>      return new ImmutableList.Builder&lt;E&gt;()<a name="line.270"></a>
<span class="sourceLineNo">271</span>          .add(first)<a name="line.271"></a>
<span class="sourceLineNo">272</span>          .addAll(elements)<a name="line.272"></a>
<span class="sourceLineNo">273</span>          .build();<a name="line.273"></a>
<span class="sourceLineNo">274</span>    }<a name="line.274"></a>
<span class="sourceLineNo">275</span>  }<a name="line.275"></a>
<span class="sourceLineNo">276</span><a name="line.276"></a>
<span class="sourceLineNo">277</span>  /**<a name="line.277"></a>
<span class="sourceLineNo">278</span>   * Returns an immutable list containing the given elements, in order.<a name="line.278"></a>
<span class="sourceLineNo">279</span>   *<a name="line.279"></a>
<span class="sourceLineNo">280</span>   * @throws NullPointerException if any of {@code elements} is null<a name="line.280"></a>
<span class="sourceLineNo">281</span>   * @since 3.0<a name="line.281"></a>
<span class="sourceLineNo">282</span>   */<a name="line.282"></a>
<span class="sourceLineNo">283</span>  public static &lt;E&gt; ImmutableList&lt;E&gt; copyOf(E[] elements) {<a name="line.283"></a>
<span class="sourceLineNo">284</span>    switch (elements.length) {<a name="line.284"></a>
<span class="sourceLineNo">285</span>      case 0:<a name="line.285"></a>
<span class="sourceLineNo">286</span>        return ImmutableList.of();<a name="line.286"></a>
<span class="sourceLineNo">287</span>      case 1:<a name="line.287"></a>
<span class="sourceLineNo">288</span>        return new SingletonImmutableList&lt;E&gt;(elements[0]);<a name="line.288"></a>
<span class="sourceLineNo">289</span>      default:<a name="line.289"></a>
<span class="sourceLineNo">290</span>        return construct(elements.clone());<a name="line.290"></a>
<span class="sourceLineNo">291</span>    }<a name="line.291"></a>
<span class="sourceLineNo">292</span>  }<a name="line.292"></a>
<span class="sourceLineNo">293</span><a name="line.293"></a>
<span class="sourceLineNo">294</span>  /**<a name="line.294"></a>
<span class="sourceLineNo">295</span>   * Views the array as an immutable list.  The array must have only non-null {@code E} elements.<a name="line.295"></a>
<span class="sourceLineNo">296</span>   *<a name="line.296"></a>
<span class="sourceLineNo">297</span>   * &lt;p&gt;The array must be internally created.<a name="line.297"></a>
<span class="sourceLineNo">298</span>   */<a name="line.298"></a>
<span class="sourceLineNo">299</span>  static &lt;E&gt; ImmutableList&lt;E&gt; asImmutableList(Object[] elements) {<a name="line.299"></a>
<span class="sourceLineNo">300</span>    switch (elements.length) {<a name="line.300"></a>
<span class="sourceLineNo">301</span>      case 0:<a name="line.301"></a>
<span class="sourceLineNo">302</span>        return of();<a name="line.302"></a>
<span class="sourceLineNo">303</span>      case 1:<a name="line.303"></a>
<span class="sourceLineNo">304</span>        @SuppressWarnings("unchecked") // collection had only Es in it<a name="line.304"></a>
<span class="sourceLineNo">305</span>        ImmutableList&lt;E&gt; list = new SingletonImmutableList&lt;E&gt;((E) elements[0]);<a name="line.305"></a>
<span class="sourceLineNo">306</span>        return list;<a name="line.306"></a>
<span class="sourceLineNo">307</span>      default:<a name="line.307"></a>
<span class="sourceLineNo">308</span>        return construct(elements);<a name="line.308"></a>
<span class="sourceLineNo">309</span>    }<a name="line.309"></a>
<span class="sourceLineNo">310</span>  }<a name="line.310"></a>
<span class="sourceLineNo">311</span><a name="line.311"></a>
<span class="sourceLineNo">312</span>  private static &lt;E&gt; ImmutableList&lt;E&gt; copyFromCollection(<a name="line.312"></a>
<span class="sourceLineNo">313</span>      Collection&lt;? extends E&gt; collection) {<a name="line.313"></a>
<span class="sourceLineNo">314</span>    return asImmutableList(collection.toArray());<a name="line.314"></a>
<span class="sourceLineNo">315</span>  }<a name="line.315"></a>
<span class="sourceLineNo">316</span><a name="line.316"></a>
<span class="sourceLineNo">317</span>  /** {@code elements} has to be internally created array. */<a name="line.317"></a>
<span class="sourceLineNo">318</span>  private static &lt;E&gt; ImmutableList&lt;E&gt; construct(Object... elements) {<a name="line.318"></a>
<span class="sourceLineNo">319</span>    for (int i = 0; i &lt; elements.length; i++) {<a name="line.319"></a>
<span class="sourceLineNo">320</span>      ObjectArrays.checkElementNotNull(elements[i], i);<a name="line.320"></a>
<span class="sourceLineNo">321</span>    }<a name="line.321"></a>
<span class="sourceLineNo">322</span>    return new RegularImmutableList&lt;E&gt;(elements);<a name="line.322"></a>
<span class="sourceLineNo">323</span>  }<a name="line.323"></a>
<span class="sourceLineNo">324</span><a name="line.324"></a>
<span class="sourceLineNo">325</span>  ImmutableList() {}<a name="line.325"></a>
<span class="sourceLineNo">326</span><a name="line.326"></a>
<span class="sourceLineNo">327</span>  // This declaration is needed to make List.iterator() and<a name="line.327"></a>
<span class="sourceLineNo">328</span>  // ImmutableCollection.iterator() consistent.<a name="line.328"></a>
<span class="sourceLineNo">329</span>  @Override public UnmodifiableIterator&lt;E&gt; iterator() {<a name="line.329"></a>
<span class="sourceLineNo">330</span>    return listIterator();<a name="line.330"></a>
<span class="sourceLineNo">331</span>  }<a name="line.331"></a>
<span class="sourceLineNo">332</span><a name="line.332"></a>
<span class="sourceLineNo">333</span>  @Override public UnmodifiableListIterator&lt;E&gt; listIterator() {<a name="line.333"></a>
<span class="sourceLineNo">334</span>    return listIterator(0);<a name="line.334"></a>
<span class="sourceLineNo">335</span>  }<a name="line.335"></a>
<span class="sourceLineNo">336</span><a name="line.336"></a>
<span class="sourceLineNo">337</span>  @Override public UnmodifiableListIterator&lt;E&gt; listIterator(int index) {<a name="line.337"></a>
<span class="sourceLineNo">338</span>    return new AbstractIndexedListIterator&lt;E&gt;(size(), index) {<a name="line.338"></a>
<span class="sourceLineNo">339</span>      @Override<a name="line.339"></a>
<span class="sourceLineNo">340</span>      protected E get(int index) {<a name="line.340"></a>
<span class="sourceLineNo">341</span>        return ImmutableList.this.get(index);<a name="line.341"></a>
<span class="sourceLineNo">342</span>      }<a name="line.342"></a>
<span class="sourceLineNo">343</span>    };<a name="line.343"></a>
<span class="sourceLineNo">344</span>  }<a name="line.344"></a>
<span class="sourceLineNo">345</span><a name="line.345"></a>
<span class="sourceLineNo">346</span>  @Override<a name="line.346"></a>
<span class="sourceLineNo">347</span>  public int indexOf(@Nullable Object object) {<a name="line.347"></a>
<span class="sourceLineNo">348</span>    return (object == null) ? -1 : Lists.indexOfImpl(this, object);<a name="line.348"></a>
<span class="sourceLineNo">349</span>  }<a name="line.349"></a>
<span class="sourceLineNo">350</span><a name="line.350"></a>
<span class="sourceLineNo">351</span>  @Override<a name="line.351"></a>
<span class="sourceLineNo">352</span>  public int lastIndexOf(@Nullable Object object) {<a name="line.352"></a>
<span class="sourceLineNo">353</span>    return (object == null) ? -1 : Lists.lastIndexOfImpl(this, object);<a name="line.353"></a>
<span class="sourceLineNo">354</span>  }<a name="line.354"></a>
<span class="sourceLineNo">355</span><a name="line.355"></a>
<span class="sourceLineNo">356</span>  @Override<a name="line.356"></a>
<span class="sourceLineNo">357</span>  public boolean contains(@Nullable Object object) {<a name="line.357"></a>
<span class="sourceLineNo">358</span>    return indexOf(object) &gt;= 0;<a name="line.358"></a>
<span class="sourceLineNo">359</span>  }<a name="line.359"></a>
<span class="sourceLineNo">360</span><a name="line.360"></a>
<span class="sourceLineNo">361</span>  // constrain the return type to ImmutableList&lt;E&gt;<a name="line.361"></a>
<span class="sourceLineNo">362</span><a name="line.362"></a>
<span class="sourceLineNo">363</span>  /**<a name="line.363"></a>
<span class="sourceLineNo">364</span>   * Returns an immutable list of the elements between the specified {@code<a name="line.364"></a>
<span class="sourceLineNo">365</span>   * fromIndex}, inclusive, and {@code toIndex}, exclusive. (If {@code<a name="line.365"></a>
<span class="sourceLineNo">366</span>   * fromIndex} and {@code toIndex} are equal, the empty immutable list is<a name="line.366"></a>
<span class="sourceLineNo">367</span>   * returned.)<a name="line.367"></a>
<span class="sourceLineNo">368</span>   */<a name="line.368"></a>
<span class="sourceLineNo">369</span>  @Override<a name="line.369"></a>
<span class="sourceLineNo">370</span>  public ImmutableList&lt;E&gt; subList(int fromIndex, int toIndex) {<a name="line.370"></a>
<span class="sourceLineNo">371</span>    checkPositionIndexes(fromIndex, toIndex, size());<a name="line.371"></a>
<span class="sourceLineNo">372</span>    int length = toIndex - fromIndex;<a name="line.372"></a>
<span class="sourceLineNo">373</span>    switch (length) {<a name="line.373"></a>
<span class="sourceLineNo">374</span>      case 0:<a name="line.374"></a>
<span class="sourceLineNo">375</span>        return of();<a name="line.375"></a>
<span class="sourceLineNo">376</span>      case 1:<a name="line.376"></a>
<span class="sourceLineNo">377</span>        return of(get(fromIndex));<a name="line.377"></a>
<span class="sourceLineNo">378</span>      default:<a name="line.378"></a>
<span class="sourceLineNo">379</span>        return subListUnchecked(fromIndex, toIndex);<a name="line.379"></a>
<span class="sourceLineNo">380</span>    }<a name="line.380"></a>
<span class="sourceLineNo">381</span>  }<a name="line.381"></a>
<span class="sourceLineNo">382</span><a name="line.382"></a>
<span class="sourceLineNo">383</span>  /**<a name="line.383"></a>
<span class="sourceLineNo">384</span>   * Called by the default implementation of {@link #subList} when {@code<a name="line.384"></a>
<span class="sourceLineNo">385</span>   * toIndex - fromIndex &gt; 1}, after index validation has already been<a name="line.385"></a>
<span class="sourceLineNo">386</span>   * performed.<a name="line.386"></a>
<span class="sourceLineNo">387</span>   */<a name="line.387"></a>
<span class="sourceLineNo">388</span>  ImmutableList&lt;E&gt; subListUnchecked(int fromIndex, int toIndex) {<a name="line.388"></a>
<span class="sourceLineNo">389</span>    return new SubList(fromIndex, toIndex - fromIndex);<a name="line.389"></a>
<span class="sourceLineNo">390</span>  }<a name="line.390"></a>
<span class="sourceLineNo">391</span><a name="line.391"></a>
<span class="sourceLineNo">392</span>  class SubList extends ImmutableList&lt;E&gt; {<a name="line.392"></a>
<span class="sourceLineNo">393</span>    transient final int offset;<a name="line.393"></a>
<span class="sourceLineNo">394</span>    transient final int length;<a name="line.394"></a>
<span class="sourceLineNo">395</span><a name="line.395"></a>
<span class="sourceLineNo">396</span>    SubList(int offset, int length) {<a name="line.396"></a>
<span class="sourceLineNo">397</span>      this.offset = offset;<a name="line.397"></a>
<span class="sourceLineNo">398</span>      this.length = length;<a name="line.398"></a>
<span class="sourceLineNo">399</span>    }<a name="line.399"></a>
<span class="sourceLineNo">400</span><a name="line.400"></a>
<span class="sourceLineNo">401</span>    @Override<a name="line.401"></a>
<span class="sourceLineNo">402</span>    public int size() {<a name="line.402"></a>
<span class="sourceLineNo">403</span>      return length;<a name="line.403"></a>
<span class="sourceLineNo">404</span>    }<a name="line.404"></a>
<span class="sourceLineNo">405</span><a name="line.405"></a>
<span class="sourceLineNo">406</span>    @Override<a name="line.406"></a>
<span class="sourceLineNo">407</span>    public E get(int index) {<a name="line.407"></a>
<span class="sourceLineNo">408</span>      checkElementIndex(index, length);<a name="line.408"></a>
<span class="sourceLineNo">409</span>      return ImmutableList.this.get(index + offset);<a name="line.409"></a>
<span class="sourceLineNo">410</span>    }<a name="line.410"></a>
<span class="sourceLineNo">411</span><a name="line.411"></a>
<span class="sourceLineNo">412</span>    @Override<a name="line.412"></a>
<span class="sourceLineNo">413</span>    public ImmutableList&lt;E&gt; subList(int fromIndex, int toIndex) {<a name="line.413"></a>
<span class="sourceLineNo">414</span>      checkPositionIndexes(fromIndex, toIndex, length);<a name="line.414"></a>
<span class="sourceLineNo">415</span>      return ImmutableList.this.subList(fromIndex + offset, toIndex + offset);<a name="line.415"></a>
<span class="sourceLineNo">416</span>    }<a name="line.416"></a>
<span class="sourceLineNo">417</span><a name="line.417"></a>
<span class="sourceLineNo">418</span>    @Override<a name="line.418"></a>
<span class="sourceLineNo">419</span>    boolean isPartialView() {<a name="line.419"></a>
<span class="sourceLineNo">420</span>      return true;<a name="line.420"></a>
<span class="sourceLineNo">421</span>    }<a name="line.421"></a>
<span class="sourceLineNo">422</span>  }<a name="line.422"></a>
<span class="sourceLineNo">423</span><a name="line.423"></a>
<span class="sourceLineNo">424</span>  /**<a name="line.424"></a>
<span class="sourceLineNo">425</span>   * Guaranteed to throw an exception and leave the list unmodified.<a name="line.425"></a>
<span class="sourceLineNo">426</span>   *<a name="line.426"></a>
<span class="sourceLineNo">427</span>   * @throws UnsupportedOperationException always<a name="line.427"></a>
<span class="sourceLineNo">428</span>   * @deprecated Unsupported operation.<a name="line.428"></a>
<span class="sourceLineNo">429</span>   */<a name="line.429"></a>
<span class="sourceLineNo">430</span>  @Deprecated<a name="line.430"></a>
<span class="sourceLineNo">431</span>  @Override<a name="line.431"></a>
<span class="sourceLineNo">432</span>  public final boolean addAll(int index, Collection&lt;? extends E&gt; newElements) {<a name="line.432"></a>
<span class="sourceLineNo">433</span>    throw new UnsupportedOperationException();<a name="line.433"></a>
<span class="sourceLineNo">434</span>  }<a name="line.434"></a>
<span class="sourceLineNo">435</span><a name="line.435"></a>
<span class="sourceLineNo">436</span>  /**<a name="line.436"></a>
<span class="sourceLineNo">437</span>   * Guaranteed to throw an exception and leave the list unmodified.<a name="line.437"></a>
<span class="sourceLineNo">438</span>   *<a name="line.438"></a>
<span class="sourceLineNo">439</span>   * @throws UnsupportedOperationException always<a name="line.439"></a>
<span class="sourceLineNo">440</span>   * @deprecated Unsupported operation.<a name="line.440"></a>
<span class="sourceLineNo">441</span>   */<a name="line.441"></a>
<span class="sourceLineNo">442</span>  @Deprecated<a name="line.442"></a>
<span class="sourceLineNo">443</span>  @Override<a name="line.443"></a>
<span class="sourceLineNo">444</span>  public final E set(int index, E element) {<a name="line.444"></a>
<span class="sourceLineNo">445</span>    throw new UnsupportedOperationException();<a name="line.445"></a>
<span class="sourceLineNo">446</span>  }<a name="line.446"></a>
<span class="sourceLineNo">447</span><a name="line.447"></a>
<span class="sourceLineNo">448</span>  /**<a name="line.448"></a>
<span class="sourceLineNo">449</span>   * Guaranteed to throw an exception and leave the list unmodified.<a name="line.449"></a>
<span class="sourceLineNo">450</span>   *<a name="line.450"></a>
<span class="sourceLineNo">451</span>   * @throws UnsupportedOperationException always<a name="line.451"></a>
<span class="sourceLineNo">452</span>   * @deprecated Unsupported operation.<a name="line.452"></a>
<span class="sourceLineNo">453</span>   */<a name="line.453"></a>
<span class="sourceLineNo">454</span>  @Deprecated<a name="line.454"></a>
<span class="sourceLineNo">455</span>  @Override<a name="line.455"></a>
<span class="sourceLineNo">456</span>  public final void add(int index, E element) {<a name="line.456"></a>
<span class="sourceLineNo">457</span>    throw new UnsupportedOperationException();<a name="line.457"></a>
<span class="sourceLineNo">458</span>  }<a name="line.458"></a>
<span class="sourceLineNo">459</span><a name="line.459"></a>
<span class="sourceLineNo">460</span>  /**<a name="line.460"></a>
<span class="sourceLineNo">461</span>   * Guaranteed to throw an exception and leave the list unmodified.<a name="line.461"></a>
<span class="sourceLineNo">462</span>   *<a name="line.462"></a>
<span class="sourceLineNo">463</span>   * @throws UnsupportedOperationException always<a name="line.463"></a>
<span class="sourceLineNo">464</span>   * @deprecated Unsupported operation.<a name="line.464"></a>
<span class="sourceLineNo">465</span>   */<a name="line.465"></a>
<span class="sourceLineNo">466</span>  @Deprecated<a name="line.466"></a>
<span class="sourceLineNo">467</span>  @Override<a name="line.467"></a>
<span class="sourceLineNo">468</span>  public final E remove(int index) {<a name="line.468"></a>
<span class="sourceLineNo">469</span>    throw new UnsupportedOperationException();<a name="line.469"></a>
<span class="sourceLineNo">470</span>  }<a name="line.470"></a>
<span class="sourceLineNo">471</span><a name="line.471"></a>
<span class="sourceLineNo">472</span>  /**<a name="line.472"></a>
<span class="sourceLineNo">473</span>   * Returns this list instance.<a name="line.473"></a>
<span class="sourceLineNo">474</span>   *<a name="line.474"></a>
<span class="sourceLineNo">475</span>   * @since 2.0<a name="line.475"></a>
<span class="sourceLineNo">476</span>   */<a name="line.476"></a>
<span class="sourceLineNo">477</span>  @Override public ImmutableList&lt;E&gt; asList() {<a name="line.477"></a>
<span class="sourceLineNo">478</span>    return this;<a name="line.478"></a>
<span class="sourceLineNo">479</span>  }<a name="line.479"></a>
<span class="sourceLineNo">480</span><a name="line.480"></a>
<span class="sourceLineNo">481</span>  /**<a name="line.481"></a>
<span class="sourceLineNo">482</span>   * Returns a view of this immutable list in reverse order. For example, {@code<a name="line.482"></a>
<span class="sourceLineNo">483</span>   * ImmutableList.of(1, 2, 3).reverse()} is equivalent to {@code<a name="line.483"></a>
<span class="sourceLineNo">484</span>   * ImmutableList.of(3, 2, 1)}.<a name="line.484"></a>
<span class="sourceLineNo">485</span>   *<a name="line.485"></a>
<span class="sourceLineNo">486</span>   * @return a view of this immutable list in reverse order<a name="line.486"></a>
<span class="sourceLineNo">487</span>   * @since 7.0<a name="line.487"></a>
<span class="sourceLineNo">488</span>   */<a name="line.488"></a>
<span class="sourceLineNo">489</span>  public ImmutableList&lt;E&gt; reverse() {<a name="line.489"></a>
<span class="sourceLineNo">490</span>    return new ReverseImmutableList&lt;E&gt;(this);<a name="line.490"></a>
<span class="sourceLineNo">491</span>  }<a name="line.491"></a>
<span class="sourceLineNo">492</span><a name="line.492"></a>
<span class="sourceLineNo">493</span>  private static class ReverseImmutableList&lt;E&gt; extends ImmutableList&lt;E&gt; {<a name="line.493"></a>
<span class="sourceLineNo">494</span>    private final transient ImmutableList&lt;E&gt; forwardList;<a name="line.494"></a>
<span class="sourceLineNo">495</span>    private final transient int size;<a name="line.495"></a>
<span class="sourceLineNo">496</span><a name="line.496"></a>
<span class="sourceLineNo">497</span>    ReverseImmutableList(ImmutableList&lt;E&gt; backingList) {<a name="line.497"></a>
<span class="sourceLineNo">498</span>      this.forwardList = backingList;<a name="line.498"></a>
<span class="sourceLineNo">499</span>      this.size = backingList.size();<a name="line.499"></a>
<span class="sourceLineNo">500</span>    }<a name="line.500"></a>
<span class="sourceLineNo">501</span><a name="line.501"></a>
<span class="sourceLineNo">502</span>    private int reverseIndex(int index) {<a name="line.502"></a>
<span class="sourceLineNo">503</span>      return (size - 1) - index;<a name="line.503"></a>
<span class="sourceLineNo">504</span>    }<a name="line.504"></a>
<span class="sourceLineNo">505</span><a name="line.505"></a>
<span class="sourceLineNo">506</span>    private int reversePosition(int index) {<a name="line.506"></a>
<span class="sourceLineNo">507</span>      return size - index;<a name="line.507"></a>
<span class="sourceLineNo">508</span>    }<a name="line.508"></a>
<span class="sourceLineNo">509</span><a name="line.509"></a>
<span class="sourceLineNo">510</span>    @Override public ImmutableList&lt;E&gt; reverse() {<a name="line.510"></a>
<span class="sourceLineNo">511</span>      return forwardList;<a name="line.511"></a>
<span class="sourceLineNo">512</span>    }<a name="line.512"></a>
<span class="sourceLineNo">513</span><a name="line.513"></a>
<span class="sourceLineNo">514</span>    @Override public boolean contains(@Nullable Object object) {<a name="line.514"></a>
<span class="sourceLineNo">515</span>      return forwardList.contains(object);<a name="line.515"></a>
<span class="sourceLineNo">516</span>    }<a name="line.516"></a>
<span class="sourceLineNo">517</span><a name="line.517"></a>
<span class="sourceLineNo">518</span>    @Override public boolean containsAll(Collection&lt;?&gt; targets) {<a name="line.518"></a>
<span class="sourceLineNo">519</span>      return forwardList.containsAll(targets);<a name="line.519"></a>
<span class="sourceLineNo">520</span>    }<a name="line.520"></a>
<span class="sourceLineNo">521</span><a name="line.521"></a>
<span class="sourceLineNo">522</span>    @Override public int indexOf(@Nullable Object object) {<a name="line.522"></a>
<span class="sourceLineNo">523</span>      int index = forwardList.lastIndexOf(object);<a name="line.523"></a>
<span class="sourceLineNo">524</span>      return (index &gt;= 0) ? reverseIndex(index) : -1;<a name="line.524"></a>
<span class="sourceLineNo">525</span>    }<a name="line.525"></a>
<span class="sourceLineNo">526</span><a name="line.526"></a>
<span class="sourceLineNo">527</span>    @Override public int lastIndexOf(@Nullable Object object) {<a name="line.527"></a>
<span class="sourceLineNo">528</span>      int index = forwardList.indexOf(object);<a name="line.528"></a>
<span class="sourceLineNo">529</span>      return (index &gt;= 0) ? reverseIndex(index) : -1;<a name="line.529"></a>
<span class="sourceLineNo">530</span>    }<a name="line.530"></a>
<span class="sourceLineNo">531</span><a name="line.531"></a>
<span class="sourceLineNo">532</span>    @Override public ImmutableList&lt;E&gt; subList(int fromIndex, int toIndex) {<a name="line.532"></a>
<span class="sourceLineNo">533</span>      checkPositionIndexes(fromIndex, toIndex, size);<a name="line.533"></a>
<span class="sourceLineNo">534</span>      return forwardList.subList(<a name="line.534"></a>
<span class="sourceLineNo">535</span>          reversePosition(toIndex), reversePosition(fromIndex)).reverse();<a name="line.535"></a>
<span class="sourceLineNo">536</span>    }<a name="line.536"></a>
<span class="sourceLineNo">537</span><a name="line.537"></a>
<span class="sourceLineNo">538</span>    @Override public E get(int index) {<a name="line.538"></a>
<span class="sourceLineNo">539</span>      checkElementIndex(index, size);<a name="line.539"></a>
<span class="sourceLineNo">540</span>      return forwardList.get(reverseIndex(index));<a name="line.540"></a>
<span class="sourceLineNo">541</span>    }<a name="line.541"></a>
<span class="sourceLineNo">542</span><a name="line.542"></a>
<span class="sourceLineNo">543</span>    @Override public UnmodifiableListIterator&lt;E&gt; listIterator(int index) {<a name="line.543"></a>
<span class="sourceLineNo">544</span>      checkPositionIndex(index, size);<a name="line.544"></a>
<span class="sourceLineNo">545</span>      final UnmodifiableListIterator&lt;E&gt; forward =<a name="line.545"></a>
<span class="sourceLineNo">546</span>          forwardList.listIterator(reversePosition(index));<a name="line.546"></a>
<span class="sourceLineNo">547</span>      return new UnmodifiableListIterator&lt;E&gt;() {<a name="line.547"></a>
<span class="sourceLineNo">548</span>        @Override public boolean hasNext() {<a name="line.548"></a>
<span class="sourceLineNo">549</span>          return forward.hasPrevious();<a name="line.549"></a>
<span class="sourceLineNo">550</span>        }<a name="line.550"></a>
<span class="sourceLineNo">551</span><a name="line.551"></a>
<span class="sourceLineNo">552</span>        @Override public boolean hasPrevious() {<a name="line.552"></a>
<span class="sourceLineNo">553</span>          return forward.hasNext();<a name="line.553"></a>
<span class="sourceLineNo">554</span>        }<a name="line.554"></a>
<span class="sourceLineNo">555</span><a name="line.555"></a>
<span class="sourceLineNo">556</span>        @Override public E next() {<a name="line.556"></a>
<span class="sourceLineNo">557</span>          return forward.previous();<a name="line.557"></a>
<span class="sourceLineNo">558</span>        }<a name="line.558"></a>
<span class="sourceLineNo">559</span><a name="line.559"></a>
<span class="sourceLineNo">560</span>        @Override public int nextIndex() {<a name="line.560"></a>
<span class="sourceLineNo">561</span>          return reverseIndex(forward.previousIndex());<a name="line.561"></a>
<span class="sourceLineNo">562</span>        }<a name="line.562"></a>
<span class="sourceLineNo">563</span><a name="line.563"></a>
<span class="sourceLineNo">564</span>        @Override public E previous() {<a name="line.564"></a>
<span class="sourceLineNo">565</span>          return forward.next();<a name="line.565"></a>
<span class="sourceLineNo">566</span>        }<a name="line.566"></a>
<span class="sourceLineNo">567</span><a name="line.567"></a>
<span class="sourceLineNo">568</span>        @Override public int previousIndex() {<a name="line.568"></a>
<span class="sourceLineNo">569</span>          return reverseIndex(forward.nextIndex());<a name="line.569"></a>
<span class="sourceLineNo">570</span>        }<a name="line.570"></a>
<span class="sourceLineNo">571</span>      };<a name="line.571"></a>
<span class="sourceLineNo">572</span>    }<a name="line.572"></a>
<span class="sourceLineNo">573</span><a name="line.573"></a>
<span class="sourceLineNo">574</span>    @Override public int size() {<a name="line.574"></a>
<span class="sourceLineNo">575</span>      return size;<a name="line.575"></a>
<span class="sourceLineNo">576</span>    }<a name="line.576"></a>
<span class="sourceLineNo">577</span><a name="line.577"></a>
<span class="sourceLineNo">578</span>    @Override public boolean isEmpty() {<a name="line.578"></a>
<span class="sourceLineNo">579</span>      return forwardList.isEmpty();<a name="line.579"></a>
<span class="sourceLineNo">580</span>    }<a name="line.580"></a>
<span class="sourceLineNo">581</span><a name="line.581"></a>
<span class="sourceLineNo">582</span>    @Override boolean isPartialView() {<a name="line.582"></a>
<span class="sourceLineNo">583</span>      return forwardList.isPartialView();<a name="line.583"></a>
<span class="sourceLineNo">584</span>    }<a name="line.584"></a>
<span class="sourceLineNo">585</span>  }<a name="line.585"></a>
<span class="sourceLineNo">586</span><a name="line.586"></a>
<span class="sourceLineNo">587</span>  @Override public boolean equals(Object obj) {<a name="line.587"></a>
<span class="sourceLineNo">588</span>    return Lists.equalsImpl(this, obj);<a name="line.588"></a>
<span class="sourceLineNo">589</span>  }<a name="line.589"></a>
<span class="sourceLineNo">590</span><a name="line.590"></a>
<span class="sourceLineNo">591</span>  @Override public int hashCode() {<a name="line.591"></a>
<span class="sourceLineNo">592</span>    return Lists.hashCodeImpl(this);<a name="line.592"></a>
<span class="sourceLineNo">593</span>  }<a name="line.593"></a>
<span class="sourceLineNo">594</span><a name="line.594"></a>
<span class="sourceLineNo">595</span>  /*<a name="line.595"></a>
<span class="sourceLineNo">596</span>   * Serializes ImmutableLists as their logical contents. This ensures that<a name="line.596"></a>
<span class="sourceLineNo">597</span>   * implementation types do not leak into the serialized representation.<a name="line.597"></a>
<span class="sourceLineNo">598</span>   */<a name="line.598"></a>
<span class="sourceLineNo">599</span>  private static class SerializedForm implements Serializable {<a name="line.599"></a>
<span class="sourceLineNo">600</span>    final Object[] elements;<a name="line.600"></a>
<span class="sourceLineNo">601</span>    SerializedForm(Object[] elements) {<a name="line.601"></a>
<span class="sourceLineNo">602</span>      this.elements = elements;<a name="line.602"></a>
<span class="sourceLineNo">603</span>    }<a name="line.603"></a>
<span class="sourceLineNo">604</span>    Object readResolve() {<a name="line.604"></a>
<span class="sourceLineNo">605</span>      return copyOf(elements);<a name="line.605"></a>
<span class="sourceLineNo">606</span>    }<a name="line.606"></a>
<span class="sourceLineNo">607</span>    private static final long serialVersionUID = 0;<a name="line.607"></a>
<span class="sourceLineNo">608</span>  }<a name="line.608"></a>
<span class="sourceLineNo">609</span><a name="line.609"></a>
<span class="sourceLineNo">610</span>  private void readObject(ObjectInputStream stream)<a name="line.610"></a>
<span class="sourceLineNo">611</span>      throws InvalidObjectException {<a name="line.611"></a>
<span class="sourceLineNo">612</span>    throw new InvalidObjectException("Use SerializedForm");<a name="line.612"></a>
<span class="sourceLineNo">613</span>  }<a name="line.613"></a>
<span class="sourceLineNo">614</span><a name="line.614"></a>
<span class="sourceLineNo">615</span>  @Override Object writeReplace() {<a name="line.615"></a>
<span class="sourceLineNo">616</span>    return new SerializedForm(toArray());<a name="line.616"></a>
<span class="sourceLineNo">617</span>  }<a name="line.617"></a>
<span class="sourceLineNo">618</span><a name="line.618"></a>
<span class="sourceLineNo">619</span>  /**<a name="line.619"></a>
<span class="sourceLineNo">620</span>   * Returns a new builder. The generated builder is equivalent to the builder<a name="line.620"></a>
<span class="sourceLineNo">621</span>   * created by the {@link Builder} constructor.<a name="line.621"></a>
<span class="sourceLineNo">622</span>   */<a name="line.622"></a>
<span class="sourceLineNo">623</span>  public static &lt;E&gt; Builder&lt;E&gt; builder() {<a name="line.623"></a>
<span class="sourceLineNo">624</span>    return new Builder&lt;E&gt;();<a name="line.624"></a>
<span class="sourceLineNo">625</span>  }<a name="line.625"></a>
<span class="sourceLineNo">626</span><a name="line.626"></a>
<span class="sourceLineNo">627</span>  /**<a name="line.627"></a>
<span class="sourceLineNo">628</span>   * A builder for creating immutable list instances, especially {@code public<a name="line.628"></a>
<span class="sourceLineNo">629</span>   * static final} lists ("constant lists"). Example: &lt;pre&gt;   {@code<a name="line.629"></a>
<span class="sourceLineNo">630</span>   *<a name="line.630"></a>
<span class="sourceLineNo">631</span>   *   public static final ImmutableList&lt;Color&gt; GOOGLE_COLORS<a name="line.631"></a>
<span class="sourceLineNo">632</span>   *       = new ImmutableList.Builder&lt;Color&gt;()<a name="line.632"></a>
<span class="sourceLineNo">633</span>   *           .addAll(WEBSAFE_COLORS)<a name="line.633"></a>
<span class="sourceLineNo">634</span>   *           .add(new Color(0, 191, 255))<a name="line.634"></a>
<span class="sourceLineNo">635</span>   *           .build();}&lt;/pre&gt;<a name="line.635"></a>
<span class="sourceLineNo">636</span>   *<a name="line.636"></a>
<span class="sourceLineNo">637</span>   * Builder instances can be reused; it is safe to call {@link #build} multiple<a name="line.637"></a>
<span class="sourceLineNo">638</span>   * times to build multiple lists in series. Each new list contains all the<a name="line.638"></a>
<span class="sourceLineNo">639</span>   * elements of the ones created before it.<a name="line.639"></a>
<span class="sourceLineNo">640</span>   *<a name="line.640"></a>
<span class="sourceLineNo">641</span>   * @since 2.0 (imported from Google Collections Library)<a name="line.641"></a>
<span class="sourceLineNo">642</span>   */<a name="line.642"></a>
<span class="sourceLineNo">643</span>  public static final class Builder&lt;E&gt; extends ImmutableCollection.Builder&lt;E&gt; {<a name="line.643"></a>
<span class="sourceLineNo">644</span>    private Object[] contents;<a name="line.644"></a>
<span class="sourceLineNo">645</span>    private int size;<a name="line.645"></a>
<span class="sourceLineNo">646</span><a name="line.646"></a>
<span class="sourceLineNo">647</span>    /**<a name="line.647"></a>
<span class="sourceLineNo">648</span>     * Creates a new builder. The returned builder is equivalent to the builder<a name="line.648"></a>
<span class="sourceLineNo">649</span>     * generated by {@link ImmutableList#builder}.<a name="line.649"></a>
<span class="sourceLineNo">650</span>     */<a name="line.650"></a>
<span class="sourceLineNo">651</span>    public Builder() {<a name="line.651"></a>
<span class="sourceLineNo">652</span>      this(DEFAULT_INITIAL_CAPACITY);<a name="line.652"></a>
<span class="sourceLineNo">653</span>    }<a name="line.653"></a>
<span class="sourceLineNo">654</span><a name="line.654"></a>
<span class="sourceLineNo">655</span>    // TODO(user): consider exposing this<a name="line.655"></a>
<span class="sourceLineNo">656</span>    Builder(int capacity) {<a name="line.656"></a>
<span class="sourceLineNo">657</span>      this.contents = new Object[capacity];<a name="line.657"></a>
<span class="sourceLineNo">658</span>      this.size = 0;<a name="line.658"></a>
<span class="sourceLineNo">659</span>    }<a name="line.659"></a>
<span class="sourceLineNo">660</span><a name="line.660"></a>
<span class="sourceLineNo">661</span>    /**<a name="line.661"></a>
<span class="sourceLineNo">662</span>     * Expand the absolute capacity of the builder so it can accept at least<a name="line.662"></a>
<span class="sourceLineNo">663</span>     * the specified number of elements without being resized.<a name="line.663"></a>
<span class="sourceLineNo">664</span>     */<a name="line.664"></a>
<span class="sourceLineNo">665</span>    Builder&lt;E&gt; ensureCapacity(int minCapacity) {<a name="line.665"></a>
<span class="sourceLineNo">666</span>      if (contents.length &lt; minCapacity) {<a name="line.666"></a>
<span class="sourceLineNo">667</span>        this.contents = ObjectArrays.arraysCopyOf(<a name="line.667"></a>
<span class="sourceLineNo">668</span>            this.contents, expandedCapacity(contents.length, minCapacity));<a name="line.668"></a>
<span class="sourceLineNo">669</span>      }<a name="line.669"></a>
<span class="sourceLineNo">670</span>      return this;<a name="line.670"></a>
<span class="sourceLineNo">671</span>    }<a name="line.671"></a>
<span class="sourceLineNo">672</span><a name="line.672"></a>
<span class="sourceLineNo">673</span>    /**<a name="line.673"></a>
<span class="sourceLineNo">674</span>     * Adds {@code element} to the {@code ImmutableList}.<a name="line.674"></a>
<span class="sourceLineNo">675</span>     *<a name="line.675"></a>
<span class="sourceLineNo">676</span>     * @param element the element to add<a name="line.676"></a>
<span class="sourceLineNo">677</span>     * @return this {@code Builder} object<a name="line.677"></a>
<span class="sourceLineNo">678</span>     * @throws NullPointerException if {@code element} is null<a name="line.678"></a>
<span class="sourceLineNo">679</span>     */<a name="line.679"></a>
<span class="sourceLineNo">680</span>    @Override public Builder&lt;E&gt; add(E element) {<a name="line.680"></a>
<span class="sourceLineNo">681</span>      checkNotNull(element);<a name="line.681"></a>
<span class="sourceLineNo">682</span>      ensureCapacity(size + 1);<a name="line.682"></a>
<span class="sourceLineNo">683</span>      contents[size++] = element;<a name="line.683"></a>
<span class="sourceLineNo">684</span>      return this;<a name="line.684"></a>
<span class="sourceLineNo">685</span>    }<a name="line.685"></a>
<span class="sourceLineNo">686</span><a name="line.686"></a>
<span class="sourceLineNo">687</span>    /**<a name="line.687"></a>
<span class="sourceLineNo">688</span>     * Adds each element of {@code elements} to the {@code ImmutableList}.<a name="line.688"></a>
<span class="sourceLineNo">689</span>     *<a name="line.689"></a>
<span class="sourceLineNo">690</span>     * @param elements the {@code Iterable} to add to the {@code ImmutableList}<a name="line.690"></a>
<span class="sourceLineNo">691</span>     * @return this {@code Builder} object<a name="line.691"></a>
<span class="sourceLineNo">692</span>     * @throws NullPointerException if {@code elements} is null or contains a<a name="line.692"></a>
<span class="sourceLineNo">693</span>     *     null element<a name="line.693"></a>
<span class="sourceLineNo">694</span>     */<a name="line.694"></a>
<span class="sourceLineNo">695</span>    @Override public Builder&lt;E&gt; addAll(Iterable&lt;? extends E&gt; elements) {<a name="line.695"></a>
<span class="sourceLineNo">696</span>      if (elements instanceof Collection) {<a name="line.696"></a>
<span class="sourceLineNo">697</span>        Collection&lt;?&gt; collection = (Collection&lt;?&gt;) elements;<a name="line.697"></a>
<span class="sourceLineNo">698</span>        ensureCapacity(size + collection.size());<a name="line.698"></a>
<span class="sourceLineNo">699</span>      }<a name="line.699"></a>
<span class="sourceLineNo">700</span>      super.addAll(elements);<a name="line.700"></a>
<span class="sourceLineNo">701</span>      return this;<a name="line.701"></a>
<span class="sourceLineNo">702</span>    }<a name="line.702"></a>
<span class="sourceLineNo">703</span><a name="line.703"></a>
<span class="sourceLineNo">704</span>    /**<a name="line.704"></a>
<span class="sourceLineNo">705</span>     * Adds each element of {@code elements} to the {@code ImmutableList}.<a name="line.705"></a>
<span class="sourceLineNo">706</span>     *<a name="line.706"></a>
<span class="sourceLineNo">707</span>     * @param elements the {@code Iterable} to add to the {@code ImmutableList}<a name="line.707"></a>
<span class="sourceLineNo">708</span>     * @return this {@code Builder} object<a name="line.708"></a>
<span class="sourceLineNo">709</span>     * @throws NullPointerException if {@code elements} is null or contains a<a name="line.709"></a>
<span class="sourceLineNo">710</span>     *     null element<a name="line.710"></a>
<span class="sourceLineNo">711</span>     */<a name="line.711"></a>
<span class="sourceLineNo">712</span>    @Override public Builder&lt;E&gt; add(E... elements) {<a name="line.712"></a>
<span class="sourceLineNo">713</span>      for (int i = 0; i &lt; elements.length; i++) {<a name="line.713"></a>
<span class="sourceLineNo">714</span>        checkElementNotNull(elements[i], i);<a name="line.714"></a>
<span class="sourceLineNo">715</span>      }<a name="line.715"></a>
<span class="sourceLineNo">716</span>      ensureCapacity(size + elements.length);<a name="line.716"></a>
<span class="sourceLineNo">717</span>      System.arraycopy(elements, 0, contents, size, elements.length);<a name="line.717"></a>
<span class="sourceLineNo">718</span>      size += elements.length;<a name="line.718"></a>
<span class="sourceLineNo">719</span>      return this;<a name="line.719"></a>
<span class="sourceLineNo">720</span>    }<a name="line.720"></a>
<span class="sourceLineNo">721</span><a name="line.721"></a>
<span class="sourceLineNo">722</span>    /**<a name="line.722"></a>
<span class="sourceLineNo">723</span>     * Adds each element of {@code elements} to the {@code ImmutableList}.<a name="line.723"></a>
<span class="sourceLineNo">724</span>     *<a name="line.724"></a>
<span class="sourceLineNo">725</span>     * @param elements the {@code Iterable} to add to the {@code ImmutableList}<a name="line.725"></a>
<span class="sourceLineNo">726</span>     * @return this {@code Builder} object<a name="line.726"></a>
<span class="sourceLineNo">727</span>     * @throws NullPointerException if {@code elements} is null or contains a<a name="line.727"></a>
<span class="sourceLineNo">728</span>     *     null element<a name="line.728"></a>
<span class="sourceLineNo">729</span>     */<a name="line.729"></a>
<span class="sourceLineNo">730</span>    @Override public Builder&lt;E&gt; addAll(Iterator&lt;? extends E&gt; elements) {<a name="line.730"></a>
<span class="sourceLineNo">731</span>      super.addAll(elements);<a name="line.731"></a>
<span class="sourceLineNo">732</span>      return this;<a name="line.732"></a>
<span class="sourceLineNo">733</span>    }<a name="line.733"></a>
<span class="sourceLineNo">734</span><a name="line.734"></a>
<span class="sourceLineNo">735</span>    /**<a name="line.735"></a>
<span class="sourceLineNo">736</span>     * Returns a newly-created {@code ImmutableList} based on the contents of<a name="line.736"></a>
<span class="sourceLineNo">737</span>     * the {@code Builder}.<a name="line.737"></a>
<span class="sourceLineNo">738</span>     */<a name="line.738"></a>
<span class="sourceLineNo">739</span>    @Override public ImmutableList&lt;E&gt; build() {<a name="line.739"></a>
<span class="sourceLineNo">740</span>      switch (size) {<a name="line.740"></a>
<span class="sourceLineNo">741</span>        case 0:<a name="line.741"></a>
<span class="sourceLineNo">742</span>          return of();<a name="line.742"></a>
<span class="sourceLineNo">743</span>        case 1:<a name="line.743"></a>
<span class="sourceLineNo">744</span>          @SuppressWarnings("unchecked") // guaranteed to be an E<a name="line.744"></a>
<span class="sourceLineNo">745</span>          E singleElement = (E) contents[0];<a name="line.745"></a>
<span class="sourceLineNo">746</span>          return of(singleElement);<a name="line.746"></a>
<span class="sourceLineNo">747</span>        default:<a name="line.747"></a>
<span class="sourceLineNo">748</span>          if (size == contents.length) {<a name="line.748"></a>
<span class="sourceLineNo">749</span>            // no need to copy; any further add operations on the builder will copy the buffer<a name="line.749"></a>
<span class="sourceLineNo">750</span>            return new RegularImmutableList&lt;E&gt;(contents);<a name="line.750"></a>
<span class="sourceLineNo">751</span>          } else {<a name="line.751"></a>
<span class="sourceLineNo">752</span>            return new RegularImmutableList&lt;E&gt;(ObjectArrays.arraysCopyOf(contents, size));<a name="line.752"></a>
<span class="sourceLineNo">753</span>          }<a name="line.753"></a>
<span class="sourceLineNo">754</span>      }<a name="line.754"></a>
<span class="sourceLineNo">755</span>    }<a name="line.755"></a>
<span class="sourceLineNo">756</span>  }<a name="line.756"></a>
<span class="sourceLineNo">757</span>}<a name="line.757"></a>




























































</pre>
</div>
</body>
</html>
